<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Hello World</title>
</head>
<body>
<p th:text="'您好,您正在进行' + ${subject_matter} + ',您的验证码为:' + ${code} + '，请在五分钟内完成验证!'">Hello World</p>
</body>
</html>